Bullet-firing alarm-lock.



C. BOHACHIK.

BULLET FIRING ALARM LOCK.

APPLICATION mm Aue.21,19n.

1 2965747; Patented Mar. 11,1919;

3 SHEETS-SHEET l- F'I i- FIG. 2.. m

Fig. 4.

C. BOHACHIK,

BULLET FIRING ALARM Lock.

' APPLICATION FILED AUG.27| 19H.

1,296,747; Patented Mar. 11,1919.

I 3 SHEETS-SHEET 2| FIG. 5. He 7 20 2 r-\ f Z6 l6 2 Q 51 Q 40$ Z BULLET FIRING ALARM LOCK. I APPLICATION FILED ALlG.2'/. i911.

Patented Mar. 11,1919.

3 SHEETS-SHEET 3- 'FIG. G9 W V j /1 W I 44' as gbIFE 65 "1mm S\\\\\\\\ 6 6'8 70 6' w 2 $3 Ba J's/slam CASSIMIR IBOHACHIK, OF CHICAGO, ILLINOISI B LLET-Frame ALARM-Loon;

. Specification ofaae'rsmat 7' P s t 11 919 Application filed August'27, 1917. Serial No. 188,373.

T all whom it may concern Be it known thatl, CASSIMIR BoHAoHm, a subject of the Emperor of Austria, residing at Chicago, in the countyof Cook and State of Illinois, have invented certain new and useful Improvements in Bullet-Firing Alarm-Lockaof which the following is a specification.

The present invention relates to looks, and more particularly to those of the type adapted to prevent unauthorizedtampering and The primary object of the invention is the provision of a door lock adapted for shooting a person attemptingto release the securing mechanism of the lock without previously actuating a safety mechanism arranged therewith, While an audible alarm is adapted to be automatically sounded at a distant point upon releasing the mechanism.

' A further object of the invention is the provision of a doorlock adapted for shoot ing a person unfamiliar with the lock mechanism who attempts to pick the lock or in any manner to release thesame in an unauthorized manner, the structure being such that a person familiar therewith may readily manipulate the lock without being injured.

A still further object of the invention is to provide a ready means 1n connection with a door lock for shooting any unauthorized persons attempting to manipulate the lock mechanism, while an authorized person may readily operate the lock without actuating the firing mechanism arranged therewith while a distantly positioned alarm will be sounded whenever the bolt of the lock is re- 7 leased.

In the drawings forming a part of this application and in which like designating characters refer to corresponding parts throughout the several views,

Figure 1 is an elevational wiew of a portion of a door and its casing illustrating the present device installed thereon.

Fig. 5 is a view of the mechanism easing 'with the front plate removed and bolt projected.

Fig. 6 is a view of the mechanism casing with the top plate removed.

Fig. 7 is a sectional View taken upon line VII-VII of Fig. 6.

Fig. 8 is a sectional view taken upon line VIIIVIII of Fig. 6. 1

Fig. 9 is a sectional view taken upon line IXIX of Fig. 6.

"Fig. 10 is an enlarged detail View par tially in section of a portion of the firing mechanism of the lock and the door upon which the same is mounted, showing. the safety mechanism released. r

Fig. 11 is a view of a portion thereof showing the safety mechanism in its operative arrangement. 7

"Fig. 12 is a vertical sectional view taken upon line XII-XII of Fig. 10, and Fig. 13 is a perspective view of a key ployed with the device- V 7 .Referring more in detail to the drawings it will be understood that the device is adapted for employment with either inside or outside doors and the said lockis herein illustrated in connection with a "door 10 having a casing 11, the exterior of the door Structure being illustrated in Fig. 1 of the drawings and showing the appearance of the present structure as seen by a person ap- .proaching the outside of the door; the esstructure is secured to the inner side of the door 10 having a removable front plate 16 adjacent the door and also having a re movable top plate 17. A U-shaped lock bolt 18 is'slidably arranged within the end compartment 19 of the casing 15 adjacent the cover plate 16, one a1'm20 of the said bolt having internal teeth 21 forming a rack adapted to be engaged by the prism shaped ward 22 of an operatingkey 23 when the key is inserted through the key hole slot 2"]: of the plate '12 and also through the front plate 16 of the casing 15 and with the free said case. A keeper 28is carried by the door casing 11 having an entrance opening 29 adapted'for the longitudinal movement of the bolt 18 therethrough whenlongltudh 'n'ally actuated by the'said key 23.

'The lower arm 30 of the bolt 18 is pro- 2 with the circuit normally open and adapted i vided with teeth 31 upon its outer edge also in the form of a rack, and arranged in mesh with a pinion 32 journaled upon the part1- tion 27, a rocking finger33 being also journaled upon the partition 27 having an arcuate toothed portion 34 in mesh with the pinion 32. Circuit wires 35 leading to an alarm bell, not shown, and positioned at any desirable distant point ither within the building where the lock is installed or in a police station, are provided with anysuitable form of circuit closer 36 being arranged for closing by pressing the push button 37.

The button 37 is arranged within the path of movement of the finger 33 and it will be evident that whenever the bolt 18 is retracted, the pinion 32 will swing the finger 33 against the button 37 thereby closing the circuit closer 36 for the wires 35 and rin ing the bell. The releasing of the lodk mechanism is thereby denoted at any distant point whenever the door 10 is unlocked by withdrawing the bolt 18 from the keeper opening 29. l

A shaft 38 is journaled through the partition 27 and the opposite end 39 of the casing 15 and is arranged with a pinion 40 thereon in the compartment 19 in constant mesh with the teeth 31 of the bolt 18. A driven shaft 41 is journaled within the casing 15 adjacent the shaft 38 while a pinion 42 upon the shaft 38 is in constant mesh with a'pinion 43 upon the driven shaft 41 and whereby any movement of the bolt 18 will result in revolving the driven shaft 41.

'The gear 44 is arranged upon a shaft 45 in mesh with an idler pinion 46 upon a similarly positioned shaft 47 and which pinion 46 is inconstant mesh with a pinion 48 arranged upon a shaft 49 which has one of its ends journaled in the casing end 39 and its other journaled through a block 50 arranged within the casing. A beveled gear 51 is carried by the shaft 49 in mesh. with a gear 52 carried by a shaft 53 positioned tridge magazine 59 is journaled within the housing 58 upon a shaft 60 journaled in the partition 27 and the casing end 39 for arranging the cartridges 61 carried by the magazine in operative alinement'with the inner end of the barrel 13 and also in position to be exploded by the spring pressed firing pin 62 arranged through the housing gagement with a sleeve 66 for sliding the said sleeve upon the driven shaft 41 upon which the sleeve is splined as best illus' trated in Fig. 11 of the drawings; 7 A pinion 67 is carried by the sleeve 66 adapted for meshing with the gear 44 while a similar pinion 68 carried by the sleeve 66 is adapted for meshing with the gear 63. A

stop 69 is arranged upon the casing end 39 adjacent the head 65 while a spring 70 interposed between the head 65 and end 39 normally maintainsthe head 65 in engagement with the inner end 71 of the stop 69 and at which times the pinions 67 and 69 are in Ineshingrelations with the gears 44 and 63 respectively. 7 V V 7 From this detailed description of the in vention the complete operation thereof will be apparent, the elements being illustrated in their normal locking arrangement in such figures as 1, 3, 6 and 9 and at which times the bolt 18 is projected and the spring 70 vmaintains the safety mechanism 14 proj ected, while the finger 33 is spaced from the V push button 37. The positioning of the key 23 within the slot 24 engages the same with the bolt teeth 21 so that the key may be turned for retracting the bolt 18. As the bolt 18 is retracted and released from its keeper 28, the finger 33 is swung against the push button 37 and retracts it for energiz ing an alarm as hereinbefore described. One ofthe cartridges 61 will also be simultaneously fired through the barrel 13 at'such times for hitting the person who is tampering with the lock such firing being effected by means of the pinions 40, 42 and 43 which are operated by the toothed lower arm 30 of the bolt 18'and through the pinion 67.

; Gears 44,746 and 48 by means of the pinions 51 and 52 operatethecam 54 retracting the hammer 56. A return spring 72 being an 7 ranged for the hammer 56 for violently contacting the hammer 56 with thefree end of the firing pin 62 and exploding the adjacently positioned cartridges 61. Any convenientushifting"means for the cartridge magazine 59 may be provided; such asthe aforementioned gear 63 carried bythe shaft 60 and turned by the pinion 68Vcfor bringing one of the cartridges into firing position adjacent the pin 62 at th instant the hammer 56 is'released for firing the same. The housing 58 is cutaway upon its lower side which permits the ready insertion of the cartridges 61 within the magazine 59 as illustratedin Fig. 12.

Any person who is familiar with the operation of the lock mechanism will push in wardly upon the safety mechanism 14 thereby disconnecting the pinions 67 and 69 before inserting the key 23 and under such circumstances it will be evident that the bolt 18 may be retracted without firing any of the cartridges 61, although the alarm will be sounded when the bolt is so retracted. The cartridges within the magazine 59 may be readily positioned at will with respect to the barrel 13 by manipulating the clutch head 65 as desired for moving the gear 63 and the magazine 59. A safety lock is arranged which is harmless when operated by a person familiar therewith but which is adapted for shooting an unauthorized person attempting to release the bolt 18 and being unfamiliar with the operation of the safety device 14.

What I claim as new is 1. A look comprising a casing, a slidable bolt carried thereby, a cartridge magazine within the casing, a firing barrel arranged adjacent the magazine and extending forwardly of the casing, a firing pin for the magazine, an operating hammer for the pin, an actuating cam for the hammer, and operating connections between the cam and bolt, whereby the hammer is adapted for actuation upon the retracting of the bolt, controlling means for said operating connections and safety adjusting means for the controlling means operable at a point adjacent the free end of the barrel, automaticpositioning means for the magazine associated with said operating means and an automatic alarm associated With the said bolt whereby the alarm is sounded when the bolt is retracted.

2. A look comprising a casing, a sliding bolt arranged therein, a tubular barrel projecting from said casing, a housing within the casing and at the inner end of the barrel, a magazine in the housing adapted for holding cartridges and for alining the same with the barrel, a spring pressed firing pin carried by the housing, a swinging hammer for the pin, an operating cam for the hammer, a driven shaft, a slidable pinion splined on said shaft, operative connections between the said pinion and cam, safety disengaging means for the sald pinion, and operative connections between the said bolt and driven ion, the said bolt being U-shaped and having toothed upper and lower arms an operating 'key for the bolt adapted for reception through the forward side of the casing in operative connection with the upper arm of the bolt, and operative connections between thela driven shaft and the lower arm of the b0 t. V

4. A lock comprising a casing, a sliding bolt arranged therein, a tubular barrel projecting from said casing, a housing within the casing at the inner end of the barrel, a magazine adapted for holding cartridges and for alining the same with the barrel, a spring pressed firing pin carried by the housing, a swinging hammer for'the pin, an operating cam for the hammer, a driven shaft, a slidable pinion splined on said shaft, operative connections between the said pinion and cam, safety disengaging means for the said pinion, the said bolt being U-shaped and having toothed upper and lower arms an operating key for the bolt adapted-for reception through the forward side of the casing in operative connection with the upper arm of said bolt, and operative connections between the driven shaft and the lower arm of the bolt, a shifting gear for said magazine, a pinion adapted for meshing with said gear arranged for simultaneous movement with the first named pinion, and an operating rod for said disengaging means terminating forwardly of the casing adjacentthe free end of the barrel.

In testimony whereof I aflix my signature;

OASSIMIR BOHAOHIK.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

